++ 



FALMS OF THE VALLEY OF THE AMAZON. 327 



pinnatisectis, subcoriaceis, pinnis 3-jugis, oppositis 

 rhomboideo-subfalcatis, •20'"--60'^ X •050-"--100'^, 

 vel jugis 2 pinnarum graminearum interpositis ; venis 

 utrinque (23-) 28-36, ad basin fiexis, medio reotis, 

 angulo costali 30^-48°, apice incurvis ; spadice •30"'- 

 •45", ramos 10-12, 3-5 infimos ramulos 2-6-edentes 

 proferente, ramuli •125"-^250'° ; spathis teneris, 

 caducis, •075«--100'". 



Hah. — Per totam provinciam Amazonensem. 

 Sub var. gramineifolia (Trail hb. Palm., 177 in 

 parte, et 200 in parte). — Pinnis 12-16-jugis 

 gramineis, plerumque univeniis •225'"--350" 

 X -009™, basalibus, apicalibus et aliis mediis 

 latioribus ligulari-rhomboideis, 2-10-veniis. 



llab. — Cum forma typica ad Tabatinga et ad 

 Barreiras de Matura in ripas fl. Solimoes, et ad 

 fl. Javary. 

 y. Var. microspatha (Trail hb. Palm., 70, 71, 72, 73, 

 74, 131 ; = Geonoma microspatha, sp.n., Spruce hb. 

 Palm., 28.)— Caudice •90™-1^80°' x •008'"--012" ; 

 foliis •60"'--90"' iis var. cosmiophyUce similibus sed 

 minoribus, tenuioribus, et rarius nitentibus, pinnis 

 3-jugis oppositis, rarius 2 gramineis interpositi ; 

 venis utrinque (24) 27-29, angulo costali 30°-46 ; 

 spadice subglabro, vix •3™, ramos 8-10 simplices 

 vel solum 2 infimos bifidos vel trifidos •10"- -20" 

 proferente; spathis -038"- •060". 

 Hab. — Ad flumina Negro et Purus. 

 Ohs. I. — G. jiaccida, Wendland, seems identical 

 with G. panicuUgera, Mart. 



Obs. 2.—G. tryugatci, Barb. Kod. (Enum. Palm, 

 nov. Amazon, 1875, no. 9, p. 12), so far as can be made 

 • out from the very brief description, is G. panicuUgera, 

 var. microspatha. 



Obs. 3. — It is somewhat difficult to determine 

 whether the variety papyracea or cosmiophyUa is the 

 type of Martius' species, as the figure in Palm. 

 Bras., t. X., shows the latter form, while the descrip- 

 tion applies rather to the former. I have not followed 

 Martins' division into the varieties hirsutula and 

 glabrata, as I have not observed the spadices notably 

 more pubescent than in other GeonomcB, nor have I ob- 

 served marked difference between different examples 

 of this very common species. 



Alveoli obscure 5-stichi, labio inferiore bifido. 



8. G. LEPTosPADix, sp. n. (Trail hb. Palm., 172).— Caudice 

 arundinaceo, -IS^-^gO" X •010", fulvo,_glaberrimo ; folus 

 10-12 contemporaneis, simplicibus, bifurcis, •60"--75", 

 lamina •SO" X •10"--125", membranacea supra subtusque 

 lajte viridi ; ala quaque triangulari-rhomboidea, acumine 

 paullo incurvato, margine exteriore ultra medium emargi- 



